Volume & Issue no: Volume 6, Issue 5, May 2017
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Title: |
Industrial Use Of Corbondioxide From Mineral Carbonation A Case Study From Magnesite From Salem |
Author Name: |
T.Subramani, M.P.Ravichandran, S.Priyanka |
Abstract: |
ABSTRACT
Magnesite is a mineral with the chemical formula MgCO3 (magnesium carbonate). Mixed crystals of iron(II) carbonate and
magnesite (mixed crystals known as an kerite) possess a layered structure: mono layers of carbonate groups alternate with
magnesium mono layers as well as iron (II) carbonate mono layers. Manganese, cobalt and nickel may also occur in small
amounts. Our project describes two rather different options for carbon dioxide (CO2) storage: (i) the fixation of CO2 in the
form of inorganic carbonates, also known as ‘mineral carbonation’ or ‘mineral sequestration’, and (ii) the industrial
utilization of CO2 as a technical fluid or as feedstock for carbon containing chemicals .In the case of mineral carbonation,
captured CO2 is reacted with metal-oxide bearing materials, thus forming the corresponding carbonates and a solid by product,
silica for example. Natural silicate minerals can be used in artificial processes that mimic natural weathering phenomena, but
also alkaline industrial wastes can be considered. The products of mineral carbonation are naturally occurring stable solids
that would provide storage capacity on a geological time scale. Moreover, magnesium and calcium silicate deposits are
sufficient to fix the CO2 that could be produced from the combustion of all fossil fuels resources. To fix a tonne of CO2 requires
about 1.6 to 3.7 tonnes of rock. From a thermodynamic viewpoint, inorganic carbonates represent a lower energy state than
CO2; hence the carbonation reaction is exothermic and can theoretically yield energy. However, the kinetics of natural mineral
carbonation is slow; hence all currently implemented processes require energy intensive preparation of the solid reactants to
achieve affordable conversion rates and/or additives that must be regenerated and recycled using external energy sources.
Keywords : Industrial Use, Corbondioxide, Mineral Carbonation, Case Study, Magnesite, Salem |
Cite this article: |
T.Subramani, M.P.Ravichandran, S.Priyanka , "
Industrial Use Of Corbondioxide From Mineral Carbonation A Case Study From Magnesite From Salem" , International Journal of Application or Innovation in Engineering & Management (IJAIEM) ,
Volume 6, Issue 5, May 2017 , pp.
285-293 , ISSN 2319 - 4847.
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